Enhanced up-conversion luminescence and optical thermometry characteristics of Er3+/Yb3+ co-doped Sr10(PO4)6O transparent glass-ceramics |
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| Authors: | Sanchuan Cui Guohua Chen |
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| Affiliation: | School of Material Science and Engineering, Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin, China |
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| Abstract: | In this paper, the Yb3+/Er3+ co-doped parent glass (PG) with composition (in mol%) of 30P2O5-10B2O3-38SrO-22K2O and transparent glass-ceramics (GCs) containing hexagonal Sr10(PO4)6O nanocrystals (NCs) were synthesized for the first time by melt-quenching method and subsequent heating treatment in air. Under 980 nm laser prompting, the GCs samples showed intense red and green up-conversion emissions compared to those characteristics for the PG sample. The emission intensities varied with Er3+ concentration and heat treatment conditions. Furthermore, in Yb3+/Er3+ co-doped GCs specimens, the optical thermometry was researched by means of fluorescence intensity ratio (FIR) of 4S3/2 and 2H11/2 levels. The GC sample heated at 620°C for 5 hours possessed a high relative temperature sensitivity (Sr) of 0.769% K−1 at 303 K and the maximal absolute temperature sensitivity (Sa) of 5.951 × 10−3 K−1 at 663 K, respectively. It is expected that the as-fabricated GC materials with Sr10(PO4)6O NCs are promising efficient up-conversion materials for optical temperature sensor. |
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| Keywords: | energy transfer glass-ceramics optical thermometry up-conversion |
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